Photo Paper

In what ways could less expensive glossy paper have a shorter image life? I have had good results with Canon Glossy Photo paper as far as image quality. Don't know about long term. Canon has Glossy Photo II as well at a higher price. I use a Canon printer and ink. Would like my prints to last a long time. Don't see why one paper surface is better than another for increased image life. Thanks for help in making a decision.
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Christian Amateur Photographer